How is acetylene prepared by Kolbe's electrolysis?
Acetylene may be prepared using Kolbes electrolytic method employing potassium fumerate. Acetylene is obtained at anode. The solution is basic due to formation of KOH at cathode.
$$ (CHCOONa)_{2} \xrightarrow[]{Electrolysis} C_{2}H_{2} + 2CO_{2} + 2KOh + H_{2} $$